<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区-->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened
                 :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
          <!-- 一级菜单区域-->
          <el-submenu :index="item.path" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区域-->
            <template slot="title">
              <!-- 图标-->
              <i :class="iconObj[item.id]"></i>
              <!-- 文本-->
              <span>{{ item.authName }}</span>
            </template>

            <!-- 二级菜单-->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
                          @click="saveNavState('/'+subItem.path)">

              <!-- 二级菜单的模板区域-->
              <template slot="title">
                <!-- 图标-->
                <i class="iconfont icon-quanlingyuguimo"></i>
                <!-- 文本-->
                <span>{{ subItem.authName }}</span>
              </template>

            </el-menu-item>

          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容 -->
      <!--      <el-main>Main</el-main>-->
      <router-view></router-view>
    </el-container>
  </el-container>
</template>

<script>
export default {
  name: "Home",
  data() {
    return {
      menulist: [],
      iconObj: {
        "125": "iconfont icon-user",
        "103": "iconfont icon-pingtai",
        "101": "iconfont icon-maijiadianpu",
        "102": "iconfont icon-shangyehuaquanqiu",
        "145": "iconfont icon-tubiaozhutu"
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的动态地址
      activePath: ''
    }
  },
  created() {
    // 获取菜单列表
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 退出登录
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login")
    },
    // 获取菜单列表
    async getMenuList() {
      const {data: res} = await this.$http.get('menus')
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      // console.log(this.menulist)
    },
    //点击按钮切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    //保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0px;
  align-items: center;
  color: #ffffff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }

}

.el-aside {
  background-color: #333744;

  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eadef1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  //内容间距
  letter-spacing: 0.3em;
  cursor: pointer;
}
</style>
